S-90131A623 1.875" ID x 3.25" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration damping with Durometer 70A hardness for effective shock absorption and noise reduction in heavy machinery
• Enhanced durability and tear resistance due to polyester fiber reinforcement, extending service life in demanding applications
• Reliable sealing performance with SBR rubber construction that resists oils, chemicals, and environmental factors
• Wide temperature tolerance up to 170°F (77°C) for stable performance across various industrial environments
• Precise compatibility with 1 3/4" screw sizes and standard inch system dimensions (1.875" ID x 3.25" OD) for easy installation
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Consistent thickness control (0.105-0.145") ensuring uniform pressure distribution and reliable sealing surfaces

Professional Applications & Engineering Value

This SBR rubber flat washer delivers critical engineering solutions for industrial applications where vibration control and fluid sealing are paramount. The polyester fiber reinforcement provides exceptional structural integrity that prevents deformation under constant load, while the Durometer 70A hardness offers optimal flexibility for effective vibration damping in machinery, automotive, and construction equipment. The SBR rubber material maintains its sealing properties against oils, water, and moderate chemicals, making it ideal for pump assemblies, flange connections, and hydraulic systems. With precise 1.875" ID x 3.25" OD dimensions compatible with 1 3/4" fasteners, it ensures proper fitment and consistent performance across inch-system applications requiring reliable sealing washers and vibration damping solutions.

Specification Summary & Compliance

This heavy-duty flat washer features inch system dimensions with 1.875" internal diameter and 3.25" outer diameter, maintaining thickness tolerance between 0.105-0.145" for consistent performance. Manufactured from SBR rubber with polyester fiber filler and rated at Durometer 70A hardness, it withstands temperatures up to 170°F. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.